The temperature on November 23, 1919 was between 6.5 °C and 10.8 °C and averaged 9.2 °C. There was 0.4 mm of rain. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
In The Netherlands , there was from September 9, 1918 to September 18, 1922 the cabinet Ruys de Beerenbrouck I, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
January 21 » A revolutionary Irish parliament is founded and declares the independence of the Irish Republic. One of the first engagements of the Irish War of Independence takes place.
May 1 » German troops enter Munich to suppress the Bavarian Soviet Republic.
May 29 » Albert Einstein's theory of general relativity is tested (later confirmed) by Arthur Eddington and Andrew Claude de la Cherois Crommelin
June 21 » The Royal Canadian Mounted Police fire a volley into a crowd of unemployed war veterans, killing two, during the Winnipeg general strike.
August 11 » Germany's Weimar Constitution is signed into law.
September 18 » Fritz Pollard becomes the first African American to play professional football for a major team, the Akron Pros.
When copying data from this family tree, please include a reference to the origin: Cor Blommers, "Family tree Mijjer", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-mijjer/I2413.php : accessed February 4, 2026), "Willem Leendert Jan Mulder (1919-)".
Copy warning
Genealogical publications are copyright protected. Although data is often retrieved from public archives, the searching, interpreting, collecting, selecting and sorting of the data results in a unique product. Copyright protected work may not simply be copied or republished.
Please stick to the following rules
Request permission to copy data or at least inform the author, chances are that the author gives permission, often the contact also leads to more exchange of data.
Do not use this data until you have checked it, preferably at the source (the archives).
State from whom you have copied the data and ideally also his/her original source.